2007 VOLVO S80 brake

Adjusting the set speed
After a speed has been set, it can be increased or decreased by using the
or buttons.
Press and hold down or until the vehicle reaches the desired speed. This will become the set speed when the
button is released.
Press or r for approximately a half second and release the button to increase or decrease vehicle speed by
approximately 1 mph (1.6 km/h).
NOTE
A temporary increase in speed, for less than 1 minute (e.g. when passing another car), does not affect the current
cruise control setting. The vehicle will automatically return to the previously set speed when the accelerator pedal is
released.
If one of the cruise control buttons is kept depressed for more than approx. 1 minute cruise control is disengaged.
The engine must then be switched off in order to reset cruise control.
Automatic deactivation
Cruise control is automatically deactivated temporarily if one of the following occurs:
If the speed drops below approximately 20 mph (30 km/h).
When the brake pedal is depressed.
If the gear selector is moved to position N.
During wheel spin or wheel lock-up.
If the vehicle's speed is increased by using the accelerator pedal for more than 1 minute.
The currently set speed will be saved in the system's memory.
143 04 Comfort and driving pleasure
Cruise control
Temporary deactivation
The driver can temporarily deactivate cruise control by pressing 0. The saved speed is shown in brackets in the
information display.
Resume set speed
If cruise control has been deactivated temporarily, it can be reactivated by pressing
. The vehicle's speed returns to
the most recently set speed.
WARNING
There may be a significant increase in speed after the
button has been pressed.
Deactivation
Cruise control is disengaged with CRUISE , by putting the gear selector in Neutral, or by switching off the engine. The
set speed is cleared.
WARNING
ProCarManuals.com

to remain approximately 2 seconds behind the vehicle ahead).
145 04 Comfort and driving pleasure
Adaptive Cruise Control-ACC
WARNING
Adaptive cruise control is not a collision avoidance system. The driver is always responsible for applying the
brakes if the system does not detect another vehicle.
Adaptive cruise control does not react to slow moving or stationary vehicles.
The distance to the vehicle ahead (in the same lane) is measured by a radar sensor. Your vehicle's speed is regulated by
acceleration and braking. The brakes may emit a sound when they are being modulated by the adaptive cruise control
system. This is normal.
WARNING
The brake pedal moves when the adaptive cruise control system modulates the brakes. Do not rest your foot under
the brake pedal.
The adaptive cruise control system is designed to follow the vehicle ahead of you in the same lane, at a set time
interval.
If the radar sensor has not detected a vehicle ahead, the system will then attempt to maintain the set speed. This is also
the case if the speed of the vehicle ahead exceeds the speed that you have set.
The adaptive cruise control system is designed to smoothly regulate speed. However, the driver must apply the brakes
in situations that require immediate braking. This applies when there are great differences in speed between vehicles,
or if the vehicle ahead brakes suddenly.
WARNING
Due to limitations in the radar sensor, braking may occur unexpectedly or not at all, see page 146
.
Adaptive cruise control can only be activated at speeds above 20 mph (30 km/h). If speed falls below 20 mph (30
km/h) or if engine speed (rpm) becomes too low, adaptive cruise control disengages and will no longer modulate the
brakes. In situations when adaptive cruise control cannot be activated Cruise Control Unavailable is shown in the
display, see page 149
.
WARNING
When adaptive cruise control disengages, the brakes will not be modulated automatically. The driver must assume
full control over the vehicle.
Warning light -driver braking required
Adaptive cruise control has a braking capacity that is equivalent to approximately 30% of the vehicle's total braking
capacity. In situations requiring more brake force than ACC can provide, if the driver does not apply the brakes, an
audible signal will sound and a red warning light will illuminate in the windshield.
ProCarManuals.com

NOTE
The red warning light may be difficult to see in strong sunlight or when sunglasses are being worn.
WARNING
Cruise control only warns of vehicles detected by the radar sensor, see page 146
. In some cases there may be no
warning or the warning may be delayed. The driver should always apply the brakes when necessary.
Automatic deactivation
Adaptive cruise control is linked to other systems such as the stability and traction control system (DSTC). If any of
these systems are not functioning properly, adaptive cruise control is automatically deactivated.
In the event of automatic deactivation a signal will sound and the message Cruise Control Canceled is shown in the
display. The
146 04 Comfort and driving pleasure
Adaptive Cruise Control-ACC
driver must then intervene and adapt the vehicle's speed to the surrounding traffic. Automatic deactivation may be
caused if:
the vehicle's speed falls below 20 mph (30 km/h)
the wheels lose traction or if the anti-lock brake system is activated
brake temperature is high
engine speed (rpm) is too low
the radar sensor is obstructed by, for example, wet snow or rain.
The radar sensor and its limitations
The radar sensor is used both by the adaptive cruise control and the collision warning system. It is designed to detect
vehicles or larger vehicles driving in the same direction as your vehicle. The radar sensor does not detect pedestrians,
or oncoming, slow or stationary vehicles and objects. Warnings are not given and the brakes are not applied in such
cases.
WARNING
Accessories or other objects must not be installed in front of the grille.
Modification of the radar sensor could make its use illegal.
The radar sensor's capacity to detect vehicles ahead is impeded:
if the radar sensor is obstructed and cannot detect other vehicles, for example in heavy rain, or if snow or other
objects are obscuring the radar sensor.
NOTE
Keep the area in front of the radar sensor clean.
ProCarManuals.com

Adaptive cruise control is disengaged (goes into standby mode):
If the speed drops below approximately 20 mph (30 km/h).
When the brake pedal is depressed.
If the gear selector is moved to position N.
During wheel spin or wheel lock-up.
If the vehicle's speed is increased by using the accelerator pedal for more than 1 minute.
NOTE
If the accelerator pedal is depressed for a short period, such as when passing another vehicle, adaptive cruise control
is temporarily disengaged and re-engages when the accelerator pedal is released.
When ACC is disengaged, the driver must assume full control of the vehicle.
Engaging the cruise control function
Before ACC can be used, it must first be put in standby mode.
To do so, press
. The set time interval is briefly shown in the display.
Setting a speed
Use the
or buttons to store (set) the vehicle's current speed. The set speed is shown in the display.
NOTE
Adaptive cruise control cannot be engaged at speeds below 20 mph (30 km/h).
148 04 Comfort and driving pleasure
Adaptive Cruise Control-ACC
Adjusting the set speed
After a speed has been set, it can be increased or decreased by using the
or buttons.
Press and hold down or to increase or decrease the set speed. This will become the set speed when the button
is released.
Press or for approximately a half second and release the button to increase or decrease the set speed by
approximately 5 mph (8 km/h)
When the system is in active mode, the button has the same function as , but results in a smaller increase in
speed.
NOTE
If adaptive cruise control does not react to activation, this may be because the set time interval to the closest
vehicle prevents an increase in speed.
In some situations cruise control cannot be activated. Cruise Control Unavailable is shown in the display, see page
149.
Setting a time interval
ProCarManuals.com

150 04 Comfort and driving pleasure
Collision warning system (option)
Introduction
The Collision Warning with Brake Support, (CW) is designed to assist the driver by warning of collision risk. The
brake support helps reduce the collision speed.
WARNING
The collision warning system does not work in all driving situations and traffic, weather and road conditions.
The system does not react to slow moving or stationary vehicles, or vehicles that are not traveling in the same
direction as your vehicle.
Warnings are only provided when the risk of collision is high. The Function section provides information about
limitations that the driver must be aware of before use.
The collision warning system's brake support can only reduce the speed at which a collision occurs if the driver
applies the vehicle's brakes.
WARNING
Never wait for a collision warning. This system is designed to be a supplementary driving aid. It is not, however,
intended to replace the driver's attention and judgement. The driver is responsible for maintaining a safe distance and
speed, even when the collision warning system is in use.
Maintenance of the collision warning system components must only be performed by a trained and qualified
Volvo technician.
Function
ProCarManuals.com

Visual warning signal, collision risk
Sensor
The radar sensor detects vehicles ahead that are moving in the same direction as your vehicle. In the event of a
collision risk, you will be alerted by a red warning light and an audible warning signal.
If the risk of collision increases after the warning, brake support is activated.
The brake support prepares the brake system for rapid braking and the brakes are applied gently, which may be
noticeable. If the brake pedal is depressed quickly then braking is implemented with full brake function, even if the
force on the pedal is light.
151 04 Comfort and driving pleasure
Collision warning system (option)
The collision warning system is active at speeds above approximately 5 mph (7 km/h).
Limitations
The visual warning signal may be difficult to see in strong sunlight or when sunglasses are being worn. For this reason
always activate the audible warning signal in such conditions.
NOTE
The visual warning signal may be temporarily disengaged in the event of high passenger compartment temperature
due to strong sunlight, etc. If this occurs, the audible warning signal will be used, even if it has been deactivated in
the menu system.
Warnings may not appear if the distance to the vehicle ahead is very small or if steering wheel and pedal movements
are large, for example, due to a very active driving style.
The collision warning system uses the same radar sensors as adaptive cruise control. For more information on the radar
sensor and its limitations, see page 146
.
WARNING
In certain situations, the system cannot provide warnings, the warning may be delayed, or false warnings may be
given if traffic conditions make it impossible for the radar sensor to detect the vehicle ahead.
If no warning is given, no brake support is provided.
ProCarManuals.com

A delayed warning means that brake support will also be delayed.
The false warnings may be in the form of both audio and visual signals.
NOTE
The number of false warnings can be limited by reducing the warning distance. See the section "Set warning
distance."
Operation
Some settings are controlled from the center console via a menu system. For information on how the menu system is
used, see page 114
.
NOTE
The following settings apply to the collision warning system only and do not affect brake support.
Activating/deactivating warning signals
The collision warning system's audible and visual signals can be activated/deactivated using
. The light in the
button indicates that the warning signals are activated.
152 04 Comfort and driving pleasure
Collision warning system (option)
By default, the audible warning signal and warning light are both activated automatically when the vehicle is started.
Automatic activation can be switched off under Car settings
Collision warn. settings On at start up.
The audible warning signal can be separately activated/deactivated separately under Car settings
Collision warn.
settings
Warning sound .
Set warning distance
The sensitivity determines how quickly the visual and any audible warning is triggered. Select one of the options
under Car settings
Collision warn. settings Warning distance .
Checking settings
The current settings are most easily checked by pressing twice on
in quick succession. The settings are shown
ProCarManuals.com

The distance monitored behind the vehicle is approximately 5 ft (1.5 m). The signal comes from the rear speakers.
The system must be deactivated when towing a trailer, carrying bicycles in a rear-mounted carrier, etc, which could
trigger the rear park assist system's sensors.
NOTE
Rear park assist is deactivated automatically when towing a trailer if Volvo genuine trailer wiring is used.
Front park assist
The distance monitored in front of the vehicle is approximately 2.5 ft (0.8 m). The signal comes from the front
speakers.
It may not be possible to combine auxiliary headlights and front park assist since these lights could trigger the system's
sensors.
154 04 Comfort and driving pleasure
Park assist (option)
Faults in the system
If the information symbol illuminates and Park Assist syst Service required is shown on the information display, this
indicates that the system is not functioning properly and has been disengaged. Consult a Volvo retailer or authorized
Volvo service technician.
CAUTION
In certain circumstances, the park assist system may give unexpected warning signals that can be caused by external
sound sources that use the same ultrasound frequencies as the system. This may include such things as the horns of
other vehicles, wet tires on asphalt, pneumatic brakes, motorcycle exhaust pipes, etc. This does not indicate a fault in
the system.
Activating/deactivating
ProCarManuals.com